GTA IV Title Update 1.0.6.0 \ 1.0.5.1 \ 1.0.4.2
Rockstar Games Social Club
* Remove Rockstar Games Social Club application
* Separate RGSC application no longer required to launch game
* Social Club login now occurs during the launch process
Shadows
* A new, less memory-intensive, and better-looking scalable shadow solution has been implemented
* Enhanced Night Shadows added with user-selectable level of detail (replaces Shadow Density)
Performance
* Rendering optimizations have been made to improve performance, particularly when enabling shadows
* User-configurable graphics settings have been added for shadow control
* Improved memory management
Benchmarking
* New system-intensive benchmarks have been added under the Graphics menu
* User gameplay captures can be used for benchmarking using the command line
Multiplayer
* Enhanced security to isolate users from cheaters and hackers
Episodic Content
* Provide in-game support to purchase "The Lost and Damned" and "The Ballad of Gay Tony" (Not available in Russian/Japanese Versions)
Bug Fixes
* Vehicle shadows re-enabled between 8pm and 6am
* Fix floating street textures
* Pedestrians in vehicles appear further out from the player to allow for long range sniping
* The Moon has been implemented with simulated lunar phases
* Fixed garbled text in Japanese Multiplayer menus
* "RESC 10" error fix for specific hardware configurations